Fl. rounded, 96 mm wide; perianth and other petaloid segments in two whorls, with some additional segments at center; the outer whorls very broadly ovate in outline, blunt or rounded at apex, yellow, spreading or somewhat inflexed, plane or a little concave, with margins incurling, smooth and of heavy substance, overlapping half or more; the additional segments at center strongly inflexed, with margins deeply incurved; corona segments one-third the length of the petaloid segments and interspersed among them, darker in tone, smooth, with margins wavy.